Ebook: System Dynamics and Long-Term Behaviour of Railway Vehicles, Track and Subgrade

During the last decades completely new technologies for high speed railway vehicles have been developed. The primary goals have been to increase traction, axle load, and travelling speed, and to guarantee safety of the passengers. However, the new developments have revealed new limitations: settlement and destruction of the ballast and the subgrade lead to deterioration of the track; irregular wear of the wheels cause an increase in overall load and deterioration of passengers comfort; damage of the running surfaces of the rail and the wheel becomes more frequent. This problems have been investigated in the Priority Programme SPP 1015 supported by the Deutsche Forschungsgemeinschaft (DFG), aiming at a better understanding of the dynamic interaction of vehicle and track and the long-term behaviour of the components of the system. The book contains the scientific results of the programme as presented at the concluding colloquium held at University of Stuttgart, Germany, March 13-15, 2002.

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During the last decades completely new technologies for high speed railway vehicles have been developed. The primary goals have been to increase traction, axle load, and travelling speed, and to guarantee safety of the passengers. However, the new developments have revealed new limitations: settlement and destruction of the ballast and the subgrade lead to deterioration of the track; irregular wear of the wheels cause an increase in overall load and deterioration of passengers comfort; damage of the running surfaces of the rail and the wheel becomes more frequent. This problems have been investigated in the Priority Programme SPP 1015 supported by the Deutsche Forschungsgemeinschaft (DFG), aiming at a better understanding of the dynamic interaction of vehicle and track and the long-term behaviour of the components of the system. The book contains the scientific results of the programme as presented at the concluding colloquium held at University of Stuttgart, Germany, March 13-15, 2002.

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During the last decades completely new technologies for high speed railway vehicles have been developed. The primary goals have been to increase traction, axle load, and travelling speed, and to guarantee safety of the passengers. However, the new developments have revealed new limitations: settlement and destruction of the ballast and the subgrade lead to deterioration of the track; irregular wear of the wheels cause an increase in overall load and deterioration of passengers comfort; damage of the running surfaces of the rail and the wheel becomes more frequent. This problems have been investigated in the Priority Programme SPP 1015 supported by the Deutsche Forschungsgemeinschaft (DFG), aiming at a better understanding of the dynamic interaction of vehicle and track and the long-term behaviour of the components of the system. The book contains the scientific results of the programme as presented at the concluding colloquium held at University of Stuttgart, Germany, March 13-15, 2002.
Content:
Front Matter....Pages I-XIX
The DFG Priority Programme System Dynamics and Long-Term Behaviour of Vehicle, Track and Subgrade....Pages 1-14
Front Matter....Pages 15-15
Vehicle/Track Interaction Optimisation within Spoornet....Pages 17-34
Active Suspension Technology and its Effect upon Vehicle-Track Interaction....Pages 35-50
Rolling-Contact-Fatigue and Wear of Rails: Economic and Technical Aspects....Pages 51-62
Front Matter....Pages 63-63
System Dynamics of Railcars with Radial- and Lateralelastic Wheels....Pages 65-84
Distributed Numerical Calculations of Wear in the Wheel-Rail Contact....Pages 85-100
Modeling and Simulation of the Mid-Frequency Behaviour of an Elastic Bogie....Pages 101-120
Wavy Wear Pattern on the Tread of Railway Wheels....Pages 121-132
Rotor Dynamics and Irregular Wear of Elastic Wheelsets....Pages 133-152
Front Matter....Pages 153-153
On the Numerical Analysis of the Wheel-Rail System in Rolling Contact....Pages 155-174
Experimental Analysis of the Cyclic Deformation and Damage Behavior of Characteristic Wheel and Rail Steels....Pages 175-190
Friction and Wear of Tractive Rolling Contacts....Pages 191-210
Model-Based Validation within the Rail-Wheel-Subgrade Modeling....Pages 211-228
Front Matter....Pages 229-229
Monitoring the Dynamics of Railway Tracks by Means of the Karhunen—Loeve—Transformation....Pages 231-246
Combined Modelling of Discretely Supported Track Models and Subgrade Models — Vertical and Lateral Dynamics....Pages 247-264
Measurement and Modelling of Resilient Rubber Rail-Pads....Pages 265-274
Model-Based Investigation of the Dynamic Behaviour of Railway Ballast....Pages 275-294
The Dynamics of Railway Track and Subgrade with Respect to Deteriorated Sleeper Support....Pages 295-314
Front Matter....Pages 315-315
Numerical Model and Laboratory Tests on Settlement of Ballast Track....Pages 317-336
Track Settlement Due to Cyclic Loading with Low Minimum Pressure and Vibrations....Pages 337-356
Front Matter....Pages 315-315
Simulation of the Dynamic Behavior of Bedding-Foundation-Soil in the Time Domain....Pages 357-376
Dynamic Behavior of Railway Track Systems Analyzed in Frequency Domain....Pages 377-394
Experimental and Numerical Investigations on the Track Stability....Pages 395-410
Experimental Investigation and Numerical Modelling of Soils and Ballast under Cyclic and Dynamic Loading....Pages 411-430
3D-Simulation of Dynamic Interaction Between Track and Layered Subground....Pages 431-450
Rigid Body Dynamics of Railway Ballast....Pages 451-470
A Comparative Study of Results from Numerical Track—Subsoil Calculations....Pages 471-488

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During the last decades completely new technologies for high speed railway vehicles have been developed. The primary goals have been to increase traction, axle load, and travelling speed, and to guarantee safety of the passengers. However, the new developments have revealed new limitations: settlement and destruction of the ballast and the subgrade lead to deterioration of the track; irregular wear of the wheels cause an increase in overall load and deterioration of passengers comfort; damage of the running surfaces of the rail and the wheel becomes more frequent. This problems have been investigated in the Priority Programme SPP 1015 supported by the Deutsche Forschungsgemeinschaft (DFG), aiming at a better understanding of the dynamic interaction of vehicle and track and the long-term behaviour of the components of the system. The book contains the scientific results of the programme as presented at the concluding colloquium held at University of Stuttgart, Germany, March 13-15, 2002.
Content:
Front Matter....Pages I-XIX
The DFG Priority Programme System Dynamics and Long-Term Behaviour of Vehicle, Track and Subgrade....Pages 1-14
Front Matter....Pages 15-15
Vehicle/Track Interaction Optimisation within Spoornet....Pages 17-34
Active Suspension Technology and its Effect upon Vehicle-Track Interaction....Pages 35-50
Rolling-Contact-Fatigue and Wear of Rails: Economic and Technical Aspects....Pages 51-62
Front Matter....Pages 63-63
System Dynamics of Railcars with Radial- and Lateralelastic Wheels....Pages 65-84
Distributed Numerical Calculations of Wear in the Wheel-Rail Contact....Pages 85-100
Modeling and Simulation of the Mid-Frequency Behaviour of an Elastic Bogie....Pages 101-120
Wavy Wear Pattern on the Tread of Railway Wheels....Pages 121-132
Rotor Dynamics and Irregular Wear of Elastic Wheelsets....Pages 133-152
Front Matter....Pages 153-153
On the Numerical Analysis of the Wheel-Rail System in Rolling Contact....Pages 155-174
Experimental Analysis of the Cyclic Deformation and Damage Behavior of Characteristic Wheel and Rail Steels....Pages 175-190
Friction and Wear of Tractive Rolling Contacts....Pages 191-210
Model-Based Validation within the Rail-Wheel-Subgrade Modeling....Pages 211-228
Front Matter....Pages 229-229
Monitoring the Dynamics of Railway Tracks by Means of the Karhunen—Loeve—Transformation....Pages 231-246
Combined Modelling of Discretely Supported Track Models and Subgrade Models — Vertical and Lateral Dynamics....Pages 247-264
Measurement and Modelling of Resilient Rubber Rail-Pads....Pages 265-274
Model-Based Investigation of the Dynamic Behaviour of Railway Ballast....Pages 275-294
The Dynamics of Railway Track and Subgrade with Respect to Deteriorated Sleeper Support....Pages 295-314
Front Matter....Pages 315-315
Numerical Model and Laboratory Tests on Settlement of Ballast Track....Pages 317-336
Track Settlement Due to Cyclic Loading with Low Minimum Pressure and Vibrations....Pages 337-356
Front Matter....Pages 315-315
Simulation of the Dynamic Behavior of Bedding-Foundation-Soil in the Time Domain....Pages 357-376
Dynamic Behavior of Railway Track Systems Analyzed in Frequency Domain....Pages 377-394
Experimental and Numerical Investigations on the Track Stability....Pages 395-410
Experimental Investigation and Numerical Modelling of Soils and Ballast under Cyclic and Dynamic Loading....Pages 411-430
3D-Simulation of Dynamic Interaction Between Track and Layered Subground....Pages 431-450
Rigid Body Dynamics of Railway Ballast....Pages 451-470
A Comparative Study of Results from Numerical Track—Subsoil Calculations....Pages 471-488
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